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How to Replace Coolant Temperature Sensor 1985-2002 Chevy Cavalier
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How to Replace Coolant Temperature Sensor 1995-2000 Chevy Tahoe
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How to Replace Coolant Temperature Sensor 1995-2000 Chevy Tahoe
Created on:
Tools used
3/4 Inch Socket
Torque Wrench
Drain Pan
Ratchet
1. Removing the Engine Coolant Temperature Sensor
Have a drain pan ready
Disconnect the engine coolant temperature (ECT) sensor wiring harness
Remove the ECT sensor with a 3/4 inch socket
2. Installing the New ECT Sensor
Twist the new sensor into place
Tighten the new sensor to between 20 - 25 foot-pounds of torque
3. Refilling the Coolant
Add coolant to make up for any coolant lost during the repair
Drive the vehicle
Check the fluid level
Add more coolant as necessary
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to replace the ECT or Engine Coolant Temperature sensor on this 2000 Cavalier with the four-cylinder motor, the same as a lot of GM vehicles with this four-cylinder engine. The only tool you'll need is a 3/4 inch, deep socket and a ratchet.
The ECT sensor is located right behind the alternator on the passenger side. There is just a little clip. Reach in and unplug the sensor. Now, you just need a 3/4 inch socket, a deep socket is best. Start removing the sensor. The sensor is a little bit below the top of the water. So, you're going to get just a little bit of water that comes out. You want to have a catch pan underneath. As you'll see, Don will be ready with the new sensor right next to it. As he pulls out the old sensor, some water comes out.
He puts the new sensor right in. You can see it's the correct sensor; it matches the original. You want to tighten the new sensor up to about 20 to 25 foot pounds, tight, but not too tight.
As you saw, we lost a little bit of fluid, so once you're done with the repair, drive the vehicle a little bit, check the coolant, and add as necessary. Once you've got it tightened up, plug it back in and you should be all set.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
Tools used
Gloves
19mm Socket
Drain Pan
Ratchet
Safety Glasses
Pocket Screwdriver
All right. So, right here is the coolant temp sensor. Obviously, you don't necessarily have to take off the air filter box. We took it off just for the video purposes, so you can see.
Here's the connector. Grab your small pocket screwdriver, release that clip, and then this should draw up and off. Now we're going to remove this. It's important to remember that coolant's going to come out, so make sure you're wearing all your safety gear and you have your collection bucket underneath.
Okay, that's getting pretty loose. I can see coolant coming out. I'm going to get my new one ready. I want to take a quick peek and make sure it matches up, and then I'm going to put it right in so I don't lose too much coolant. Looks right. Put it right in there.
Now we're going to snug it up. It's important to remember that it doesn't actually bottom out against the engine. You want to go approximately halfway down.
Go a little further here. All right. It's in the approximate direction that it already was. It's not completely bottomed out, but it's definitely threaded in. That looks great.
Let's grab that electrical connector, take a peek. Looks good as well. Plug it in.
Okay, so the next thing you'd want to do is fill up your cooling system.
Tools used
19mm Wrench
19mm Socket
Straight Cutters
Drain Pan
Trim Tool Set
Pliers
Coolant Funnel Set
Pick
Tools used
Channel-Lock Pliers
19mm Socket
Drain Pan
Ratchet
Anti-Freeze
1. Draining the Coolant
Have a drain pan ready
Loosen the hose clamp on the coolant hose
Remove the hose
Drain the coolant
Slide the hose on to the radiator
Tighten the hose clamp
2. Removing the Coolant Temperature Sensor
Disconnect the electrical connector
Loosen the 19mm nut on the temp sensor
Remove the temp sensor
3. Installing the Coolant Temperature Sensor
Insert the temp sensor into place
Tighten the 19mm nut to the temp sensor
Connect the connector
4. Refilling the Coolant
Open the coolant reservoir
Fill the reservoir to the full line
Tighten the cap
Start the truck
Check the coolant level
Top off the coolant
Let the engine reach operating temperature
Let the engine cool and check the level
Top off the coolant as needed
Hi, I’m Mike from 1A Auto. We’ve been selling auto parts for over 30 years!
To drain the coolant, I'm going to go down here to the lower radiator hose at the radiator outlet, undo the spring clamp with a pair of pliers, and pull this hose off. I already have a drain pan underneath the truck to catch any coolant or all of the coolant that will leak out. All right, and then we'll release the clamp with a pair of pliers. Work the hose off the radiator. Pull it back and forth.
After you drain this coolant, if you're not going to reuse it, just make sure you dispose of it properly. With the majority of the coolant drained out, I'm going to put the lower hose back onto the radiator, and just kind of slide it back into place. We're not going to clamp it yet.
The coolant temp sensor on this 4.3 liter is down here on the side of the block. There's a connector to it that threads into the block. I'm going to take some brake parts cleaner, just sort of clean it off so you can have a better idea of what I'm doing, and kind of see it. There's an electrical connector on the top. I'm going to open it up. There it is. What I did, I had to find this little tab on the connector and pull it up to unlock it, and the connector came right out. We'll leave it up here, so we know where the connector is.
Engine coolant temp sensor is down here on the side of the block. There is an engine harness that normally runs along here and a bracket. We just pushed it out of the way and moved the engine harness up, just to give you a better idea of what we're doing. You don't have to move those things out of the way to replace it, but this makes it easier to see on video.
Take a 19mm deep socket—it's going to go over the sensor. Just kind of unthread it from the block. Before you do this, you want to make sure the coolant is drained because coolant will come of there. You could swap it, but it gets pretty messy, and you'd have to be pretty fast. I see it's still pretty tight, I'll loosen it some more. That is the coolant temp sensor if you want to know. This is our old coolant temp sensor.
Here's our brand new one from 1AAuto.com. See, they're identical in design, same style connector, same lock, two pin. Comes with new thread sealant. This'll go right in and work great for you.
Take the new sensor, install it in the same place. Get it started. It'll get harder to turn because of the thread sealant. Use the 19mm deep socket again to install it. I can see the red thread sealant is almost all the way in, and it's getting pretty tight. When I feel it getting tight, I'm going to stop.
Reinstall the harness. Coolant temp sensor is replaced. I've just got some slip joint pliers in here and reinstalling the clamp on the lower radiator hose, squeeze it together. Got to refill the system with the correct coolant. Open up the reservoir and then refill it. I'll just kind of refill it slowly and let any trapped air bubbles escape.
With the coolant filled to the full cold, I'm going to reinstall the cap. Start the truck up. It may suck some of the coolant back into the system. Then, I will shut the truck off and recheck the level, top it back off, then start it and let it run to bleed the system and come up to temperature. Just needs to be topped off a tiny bit. Let the engine come up to temperature and make sure the fluid level is correct afterwards. Top off as needed.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
Tools used
19mm Wrench
19mm Socket
Straight Cutters
Drain Pan
Trim Tool Set
Pliers
Coolant Funnel Set
Pick
Tools used
Funnel
Socket Extensions
Jack Stands
19mm Socket
Drain Pan
Ratchet
Floor Jack
Needle nose pliers
1. Draining the Coolant
Remove the radiator cap
Raise and secure the vehicle
Have a drain pan ready
Twist the drain plug out with needle nose pliers
Allow the coolant to drain
2. Removing the Coolant Temperature Sensor
Disconnect the temperature sensor wiring harness with a flat blade screwdriver
Remove the sensor with a 19mm socket and ratchet
3. Installing the New Coolant Temperature Sensor
Insert the new temperature sensor
Tighten the sensor with a 19mm socket and ratchet
Connect the temperature sensor wiring harness
4. Refilling the Coolant
Tighten the drain plug
Add coolant to the radiator using a funnel
Twist on the radiator cap
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video we're going to show you how to replace the engine coolant temperature sensor on this 1996 Chevy Tahoe. It's the same part and process on these Tahoes from '95 to 2000. The items you'll need for this are a new coolant temperature sensor from 1AAuto.com, a 19 mm socket and ratchet, a pair of pliers, jack and jack stands, drip pan, coolant, a funnel, and a flat blade screwdriver.
Start off by removing your radiator cap. Then raise your vehicle and right here is the drain plug. You want to turn this and the coolant will start pouring. Using a pair of pliers twist that drain plug. Make sure your drip pan is underneath and let your coolant drain out. Your temperature sensor is located right here. Just pry down on the tab and pull up on the harness. Using a 19 mm socket and ratchet remove the sensor. On the right is the old temperature sensor.
On the left is the new one from 1A Auto. You can see that they're identical and they're going to fit exactly the same. Put your new temperature sensor into place and twist it in. You want to tighten this until it's nice and firm. It doesn't actually have to be seated to the top of the threading. Reconnect your harness. Tighten up your drain plug and then, using a funnel, replace the coolant and replace your radiator cap and you're all set.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
Tools used
Socket Driver
19mm Socket
Drain Pan
Ratchet
Pliers
Pocket Screwdriver
Tools used
Funnel
Socket Extensions
Jack Stands
19mm Socket
Drain Pan
Ratchet
Floor Jack
Needle nose pliers
1. Draining the Coolant
Remove the radiator cap
Raise and secure the vehicle
Have a drain pan ready
Twist the drain plug out with needle nose pliers
Allow the coolant to drain
2. Removing the Coolant Temperature Sensor
Disconnect the temperature sensor wiring harness with a flat blade screwdriver
Remove the sensor with a 19mm socket and ratchet
3. Installing the New Coolant Temperature Sensor
Insert the new temperature sensor
Tighten the sensor with a 19mm socket and ratchet
Connect the temperature sensor wiring harness
4. Refilling the Coolant
Tighten the drain plug
Add coolant to the radiator using a funnel
Twist on the radiator cap
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video we're going to show you how to replace the engine coolant temperature sensor on this 1996 Chevy Tahoe. It's the same part and process on these Tahoes from '95 to 2000. The items you'll need for this are a new coolant temperature sensor from 1AAuto.com, a 19 mm socket and ratchet, a pair of pliers, jack and jack stands, drip pan, coolant, a funnel, and a flat blade screwdriver.
Start off by removing your radiator cap. Then raise your vehicle and right here is the drain plug. You want to turn this and the coolant will start pouring. Using a pair of pliers twist that drain plug. Make sure your drip pan is underneath and let your coolant drain out. Your temperature sensor is located right here. Just pry down on the tab and pull up on the harness. Using a 19 mm socket and ratchet remove the sensor. On the right is the old temperature sensor.
On the left is the new one from 1A Auto. You can see that they're identical and they're going to fit exactly the same. Put your new temperature sensor into place and twist it in. You want to tighten this until it's nice and firm. It doesn't actually have to be seated to the top of the threading. Reconnect your harness. Tighten up your drain plug and then, using a funnel, replace the coolant and replace your radiator cap and you're all set.
We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
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2003 impala 3.4l coolant temp sensor
Thomas
August 15, 2018
Easy to install with proper 19mm socket and works like a charm
Fast service
Jim
October 11, 2018
Like you, I'm trying to rebuild an old truck. This is a great source for parts. They have the stuff and ship it quickly. I don't much care about anything else. Thanks.
Tom
March 25, 2019
Parts ordered were correct fit and arrived as scheduled. Price was very reasonable. Based on part selection, pricing and part quality, 1A Auto is my go to online parts place.
Good buying experience
Thomas
June 30, 2019
First time buyer from A1A. Site easy to use. No shipping costs. Watched installation video. Parts fit perfectly. Car also runs perfectly now.
It was easy to install and I recommend it this item
ACDelco Quality
Carlen
February 8, 2022
Exactly as described. Perfect fit. Fast shipping. Good video included to help installation.
Customer Q&A
What is the on and off temperature?August 27, 2019
Dennis H
10
The sensor does not have an on and off switch and will work when it needs to read the temperature. Please let us know if you have any further questions.
August 27, 2019
Emma F
My temp gauge stays on 100 degrees have replaced both censors still same problem any suggestions?July 25, 2020
G I
10
Thanks for your inquiry. There could be multiple reasons why you're having this particular problem. We suggest taking your vehicle to a nearby reputable shop to identify the cause. Once you know the cause, we'll be happy to see if we carry the parts and how-to videos needed for your repair.
July 28, 2020
Adam G
My temp gauge stays on 100 degrees have replaced both censors still same problem any suggestions?July 25, 2020
G I
10
Hi. Did you remove your thermostat?Check radiator cap,radiator,coolant hoses for leaks.Do not use water.Check fan clutch.If electric fan,then check terminals and that the fan runs at correct speed.Are you running hot plugs.Check your engine timing.The sensor is good quality.
July 25, 2020
M C
10
I would check the wiring going to the sensor and the plug-in for Corrosion or cracked or damaged wire or possibly melted Wiring
July 25, 2020
Mike H
10
Thanks for your inquiry. There could be multiple reasons why you're having this particular problem. We suggest taking your vehicle to a nearby reputable shop to identify the cause. Once you know the cause, we'll be happy to see if we carry the parts and how-to videos needed for your repair.
July 28, 2020
Jessica D
Customer service
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